beat the meat
虚度时间或浪费精力
俚语·粗俗，指自慰或浪费时间
英文释义
to masturbate
例句
He spent the whole afternoon beating the meat instead of doing his homework.
典故来源
20世纪英语俚语，'meat'暗指男性生殖器，为粗俗表达，常带幽默或贬义。